Dreams Could Be Key to Unlocking Problem-Solving Skills, Northwestern Study Suggests

A new study led by researchers from Northwestern University indicates that it may be possible to influence dreams to assist in solving problems. The research suggests that specific sounds can prompt sleeping volunteers to dream about particular unsolved puzzles.

Participants who were successfully prompted in their dreams demonstrated a higher likelihood of solving these same puzzles upon waking.

Study Methodology

The experiment involved 20 participants, predominantly lucid dreamers, who were given challenging puzzles. Each puzzle was associated with a distinct soundtrack. During the sleep phase, researchers played back the soundtracks corresponding to half of the unsolved puzzles.

Some volunteers provided signals, such as sniffs or eye movements, indicating they heard the cue and were dreaming about the puzzles.

Key Findings

The results showed that 12 participants whose dreams were targeted with prompts reported dreaming about puzzles more frequently. For these 12 individuals, their problem-solving ability the following day for those puzzles increased from 20 percent to 40 percent.

Across the entire participant group, the solving rate for puzzles that appeared in dreams was 42 percent, compared to 17 percent for puzzles that did not appear in dreams.

Dream recountings revealed that thoughts about the puzzles, and attempts to solve them, occurred during sleep.

Neuroscientist Karen Konkoly noted examples such as a dreamer asking a dream character for help with a cued puzzle, another dreaming of a forest after a 'trees' puzzle cue, and another dreaming of fishing in a jungle following a 'jungles' puzzle cue.

Limitations and Future Research

The study has limitations, including a relatively small number of participants and a focus on lucid dreamers, which may limit generalizability. There may also be other factors influencing both dreaming about puzzles and subsequent problem-solving ability, making direct causation difficult to establish with certainty.

Researchers plan further studies to investigate the impact of dreams on different types of creativity and problems, and to understand why some individuals responded to dream prompts while others did not.

Psychologist Ken Paller stated that learning more about how brains think creatively could contribute to solving problems, and sleep engineering might assist in this process. Konkoly expressed hope that these findings would lead to stronger conclusions about the functions of dreaming, potentially elevating dreams as a priority for mental health and wellbeing.

The research was published in Neuroscience of Consciousness.